The latest addition to my radio shack is the GY561 frequency & power meter, which has already come in useful for measuring the output power of all my radios. It’s a small device, roughly the same size & weight as a stock UV-5R. Power is provided by 3 AAA cells.
Thanks to Lewis, M3HHY for lending me this one 🙂 Here’s a quick look at a Sainsmart frequency counter module. These are useful little gadgets, showing the locked frequency on a small LCD display. It’s built around an ATMega328 microcontroller (µC), and an MB501L Prescaler IC. The circuit for this
Here’s my latest project with the Pi: interfacing it with the Sparkfun Geiger counter & outputting the resulting data to a character LCD. The geiger counter is interfaced with it’s USB port, with the random number generator firmware. A Python script reads from the serial port & every minute outputs
Here’s something new, an internet connected Geiger counter! The graph in the sidebar is updated once every 60 seconds, and can be clicked on for a larger version. Measurements are in Counts Per Minute, the graph logs 1 hour of data. The counter itself is a Sparkfun Geiger counter, with the
Here is a Sanyo tape recorder, with built in voice activation. Takes standard audio cassettes. Here visible is the speaker on the left, microphone is on the right of the tape window. The tape counter is at the top. Back cover removed from the unit, showing the PCB & the
This is the Current Cost CC128 Real Time Power Meter. Shown here is the display unit, British Gas issued these free to some customers. This unit measures current power draw in Watts, cost of power currently being used (requires unit price to be set), overall kWh usage over the past